Stop-motion mechanism for spoolers and winders



(No Model.) I 2 Sheets-Shee't 1. T.- G. ENTWISTLE.

STOP MOTION MECHANISM FOR SPOOLERS AND WINDY-RS.

No. 360,868. Patented Apr. 12, 1887.

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- (No Model.) 2 Sheets- Sheet 2.

T. Q. ENTWISTLE.

STOP MOTION MECHANISM FOR SPOOLERS AND WINDBRS.

No. 360,868. Patented Apr. 12, 1887.-

N. PETERS. Phokolflhographcr. Washington. D. C.

UNITED STATES PATENT OFFICE.

THO-MAS c. ENTWISTLE, or LOWELL, MASSACHUSETTS.

STOP-MOTION MECHANISM FOR SPOOLERS AND W INDERS.

SPECIFICATION forming part of Letters Patent No. 360,868, dated April 12 1887. Application filed April 28, 1886. Serial lTo. 200,402. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS C. ENTWISTLE, a citizen of the United States, residing at Lowell, in the county of Middlesex and. Commonwealth of Massachusetts, have invented a certain new and useful Improvement in Stop- Motion Mechanisms for Spoolers and \Vinders, of which the following is a specification.

My invention relates to stop-motion mechanism for spoolers and winders; and it consists in the devices and combinations hereinafter described and claimed, the object of my invention being to stop any spool when a thread which is being wound thereon breaks without stopping the other spools of the machine; also, to allow any of the drop-wires to be readily placed in position and removed therefrom.

In the accompanying drawings, on two sheets, Figure 1 is an end elevation of the frame of aspooler, and shows the spools, yarn guides and clearers, the spindles, the rods which lift the yarnguides, the yarns, the bobbins from which the yarns are drawn, the friction-beams, the vibrator-shaft, the fast and loose pulleys, the mechanism which operates the vib'ratorshaft, and part of the frame of the machine; Fig. 2, a side elevationof the spooler-frame near its end, showing the parts shown in Fig. 1; Fig. 3, an end elevation of a part of a spooler, showing a spool, its spindle, part of the frame, part of the lifting-rod which raises the yarnguide rod, a yarn-guide rod, a yarnclearer, a vibrator, and the'upper part of the link which raises the lifting-rod, showing also, in section, the friction-beam, the. vibratorshaft, the step and bolster of the spindle, and a part of the spindle, together with my stopmotion mechanism operating to raise the spool, in full lines, showing also, in dotted lines, the position of the vibrator when nearest the friction-beam and the position of the other parts of the stop-motion mechanism and of the spool and the spindle-clutch when the yarn is unbroken; Fig. 4, a side elevation of a part of a spooler at its end, a part of the fast pulley,

the spindle and spool, the yarn-guide, yarnclearer, lifting-rod, a part of the friction-beam, its upper portion being broken away in part, and my improved stop-motion,show1ng four drop-wires, from one of which the thread is absent, the spool being stopped.

B, supported on the clearer-rods b, the liftingrods b, connected by links b to the lifting-levers b the latter being pivoted at their middie and operated in one direction by weights 6, and in the other direction by cams, (not shown herein, but shown in patent to Isaac W. Clarke, No. 89,854, dated May 11, 1869,) which depress the stud b projecting horizontally from each. lifting-lever on the other arm. thereof from that which supports the Weight bf, the lifting-levers, lifting-rods, and guide-rods, constituting the building motion which disposes the yarns properly on the spools S, are allof the usual construction and operation.

The friction-bea1ns F, having their convex surfaces covered with flannel, f, to produce a friction or tension of the yarns y as they are drawn from the bobbins through the yarn-eyes w of the drop-wires W, said drop-wires, the vibrator V, secured to the vibrator-shaft o, the forked arm '0, also secured to the vibratorshaft and caused to oscillate by an eccentric, E, driven by'a belt, e, which passes around a pulley, D", on the main shaft and around a pulley, e, concentric with the center of motion of and secured to said eccentric E, together with another vibrator, precisely like the vibrator V, and secured to another vibra-. tor-shaft at the opposite side of the machine from said vibrator V and driven by mechanism at the other end of the spooler, which is the duplicate of the mechanism shown for operating said vibrator V, (the vibrator at the other side of the machine and its operating mechanism not being shown,) are also all of the usual construction and operation. The spindle Q is supported in a step, q, and bolster g said step and bolster being secured, respectively, in the step-rail and the bolsterrail R It, the latter being bolted to the frame A in the usual manner.

The spindle Q is of unusual construction, the lower part of the same being provided with the usual whirl, (f, by which it is driven from a band, 0, from the cylinder in the usual manner, the lower part of said. spindle being provided with a central cylindrical opening, and with a cup, 1*, having a conical interior.

The i upper part of the spindle at its lower end is cylindrical, to fit the central opening of the lower part of said spindle, and has secured to it an upwardly-flaring collar, q, of a size and shape to fit the cup q and cause the upper part of the spindle to be driven by friction on the lower part of the same, when the collar is in the cup, the collar and cup forming the counterparts of a friction-clutch.

The spool S surrounds the upper end of the upper part of the spindle and rests upon the flat upper surface of the collar q", and is driven by frictional contact therewith. The collar q is provided with an annular groove, to receive the forked upper nearly-horizontal end ofa bent lever, P, pivoted at p to the upper end of a bracket, p, secured to the bolster-rail R. The lower end of the lever P extends outward foradistance toward the vibrator V, (see Fig. 3,) and its end is bent upward, to limit the motion of the falling drop-wire, its lower end, f, serving the purpose of the usual stationary stop-bar.

A drop-wire, \V, of the usual construction, is pivoted at w to the lever P in such a position that when its free end falls upon the end 12' of the lever P the drop-wire will be in a nearly-horizontal position and in the path of the vibrator V. The drop-wire is normally held in the position shown in Fig. 1 and by dotted lines in Fig. 3, at an angle ofless than fortyfive degrees from a vertical position, by the tension of the yarn 3 which passes through the yarn-eye of said drop-wire, as above stated, in passing from the friction-beam to the yarnguide; but when the yarn breaks the drop-wire falls by its own weight upon the lower outer end, 1)", of the lever P, and is struck on its free end by the vibrator V at the next inward motion of said vibrator, the vibrator pushing the drop-wire and the lever P toward the middle of the machine, and causing the forked upper end of said lever P to raise the collar 41 out of the cup q" and stop the revolution of the spool S, the lower part of the spindle being still driven, as above described, but the friction between the two parts of the spindle being too small to drive the upper part of the spindle. \Vhen the lower arm of the lever P swings inward, a horizontal stud, p, projecting from said lever engages with ahook or projection, i, on the under side of a catch-lever, T, pivoted at t to the lower part of the bracket 2, said bracket extending below the bolster-rail R, and preventsthe lever P from resuming its normal position, and therefore prevents the spindle-clutch from coupling and the spool from being rotated until the free end of said catchlever T is lifted. Vhen the drop-wire is again threaded, the broken ends of the yarn being then tied together, the drop-wire is again held out of the path of the vibrator, and the catchlever is raised out of engagement with the lever P, and thereupon the tension of the yarn, drawing the lower end of said lever P toward the friction-beam, and the weight of the spool cause the parts of the clutch to couple, causing the spool to be again revolved.

The use of a stop-motion is necessary where several yarns are wound at the same time upon the same spool from several bobbins or cops, in order that when the yarns are twisted together the resulting thread may be of uniform diameter.

In the drawings four yarns are shown being wound upon each spool, and the mechanism above described will stop the spool when any one of its yarns breaks. Only one lever P is required for each spool; but a separate dropwire must be used for each yarn. Inasmuch, therefore, as it is sometimes desired to fill a bobbin from a greater or less number of spools simultaneously, it is desirable to have the dropwires, or, at least, all but one of them, removable from the lever P, so that instead of pivoting said wires directly to said lever I pivot them to small heads or brackets w, which are provided on their inner sides with dovetails 10", which enter a horizontal dovetailed groove in said lever, being held therein by friction.

The upper part of the spindle may be prevented from being separated from the lower part when the spool is lifted from the spindle in doffing, or for any reason, by a hook, U, the shank u of which is screwed into the top of the bolster-rail, and the upper part or hook proper, u, of which is turned into the annular groove q. By turning the hook to out of the groove the parts of the spindle may be separated.

I claim as my invention- 1. A spindle formed in two parts placed with their axes in the same straight line, one of said parts being provided with an axial opening adapted to receive a portion of the other of said parts and to support the same, each of said parts being provided with one of the counterparts of a clutch, whereby the rotation of one of said parts will cause a rotation of the other of said parts when said clutch is closed, but will allow said last-named part to remain stationary when said clutch is open, in combination with a bell-crank lever provided with an upper arm adapted to. engage the upper part of said clutch, a pivoted drop-wire supported upon the lower arm of said lever, a vibrator having a reciprocating motion, said drop-wire being normally held out of the path of said vibrator by the tension of the yarn being wound upon a spool supported upon said spindle, but adapted when said yarn is broken to fall into the path of said vibrator, whereby when a yarn being wound upon said spool is broken the upper part of said spindle will be uncoupled from the lower part of the same and no longer rotated thereby, as and for the purpose specified.

2. The combination of a spindle formed in two parts, one of which is adapted to be rotated in stationary bearings, means for rotating the same, the other or upper portion of which spindle is provided with a cylindrical lower portion adapted to enter and fit a corresponding opening in the lower part of said spindle, each of said parts of said spindle being provided with one of the counterparts of a clutch, which when coupled causes said upper part to be rotated upon the rotation of said lower part, said upper part of said spindle being adapted to support a spool and to rotate the same by frictional contact therewith and provided with an annular groove, a bell-crank lever provided with a forked upper arm adapted to engage said annular groove, a pivoted drop-wire supported upon the lower arm of said lever, a vibrator having a reciprocating motion, said drop-wire being normally held out of the path of said vibrator by the tension of the yarn being wound upon said spool, but adapted when said yarn is broken to fall into the path of said vibrator, whereby when a yarn being wound upon said spool is broken the upper part of said spind-ie will be separated or uncoupled from said lower part of said spindle and no longer rotated thereby, as and for the purpose specified.

' 3. The combination of a spindle formed in two parts, the upper of which is normally driven by frictional contact with the lower,

7 said upper part being provided with an annular groove, a lever having a forked arm ,adapted to engage with said groove, apivoted catch-lever provided with a catch adapted to engage a stud projecting from the lower arm of said lever, said stud, a vibrator, a dropwire pivoted to said lower arm and normally held out of the path of said vibrator, but when unsupported by the tension of a yarn, as herein described, adapted to be struck by said vibrator, whereby said lever is turned upon its fulcrum to raise the upper part of said spin- 'dle and to engage said catch-lever with said THOMAS C. EN'IWVISTLE.

WVitnesses:

ALBERT M. MOORE, v GERTRUDE M. DAY. 

